Printing control device, printing control method, and printing control program recording medium

1. A printing control device for controlling a printing device to print on a printing medium a printing image corresponding to printing data by using a printing head for adhering ink on the printing medium, comprising: an error acquiring unit for acquiring error information expressing a result of comparing a colorimetric data obtained by measuring a color of a standard image of a standard recording amount in the ink printed on the printing medium in a specified color space with a reference colorimetric data; a printing control unit for correcting, by using the error information, printing data expressing an image into printing data compensating for a color drift of the image to be printed by the printing device, and controlling the printing device to print a printing image corresponding to the corrected printing data; and a storage area for storing a plurality of color correcting data specifying a relationship of correspondence between printing data before the correction and corrected printing data for compensating the color drift in the printing image for every plurality of stages of comparison results between the colorimetric data obtained by measuring the color of the standard images in the specified color space and the reference colorimetric data, wherein the printing control unit specifies the color correcting data corresponding to the error information among a plurality of color correcting data stored in the storage area, and corrects the printing data by referring the color correcting data.

2. The printing control device according to claim 1 , wherein the printing control unit corrects the printing data expressing the image by using the error information to make printing data for compensating for the errors of the colorimetric data of the standard image printed by the printing device in relation to the reference colorimetric data.

3. A printing control device for controlling a printing device to print on a printing medium a printing image corresponding to printing data by using a printing head for adhering ink on the printing medium, comprising: an error acquiring unit for acquiring error information expressing a result of comparing a colorimetric data obtained by measuring a color of a standard image of a standard recording amount in the ink printed on the printing medium in a specified color space with a reference colorimetric data; and a printing control unit for correcting, by using the error information, printing data expressing an image into printing data compensating for a color drift of the image to be printed by the printing device, and controlling the printing device to print a printing image corresponding to the corrected printing data, wherein the specified color space is defined as a color space consisting of a plurality of color components as their color component amounts, error information expresses a result of comparing only the color component amounts with the maximum variation in relation with the recording amount of ink among a plurality of color component amounts when the colorimetric data obtained by measuring the color of the standard image in the specified color space and the reference colorimetric data are to be compared, and the printing control unit corrects printing data expressing an image to the printing data in such a way that an error of the standard image printed by the printing device in the color component amount with the maximum variation in relation to the reference colorimetric data is compensated by using the error information.

4. The printing control device according to claim 3 , wherein when (i) a reference printing device serving as a reference is used to print images for selecting color component according to a first printing amount and a second printing amount mutually different by the ink on the printing medium, (ii) each color of the printed image for selecting color component is measured in the specified color space to obtain colorimetric data consisting of a plurality of color component amounts for both images for selecting color components, (iii) the difference of color component amounts for both images for selecting color component for each color component in the specified color space is calculated, and (iv) the selected color component amount of the color component with a maximum difference is specified, the error information expresses the comparison result obtained by comparing only the selected color component amounts when the colorimetric data obtained by measuring the colors of the standard images in the specified color space and the reference colorimetric data are compared, the printing control unit corrects printing data expressing images to the printing data in such a way that an error in the reference colorimetric data in the selective color component amount of the standard image printed by the printing device is compensated.

5. The printing control device according to claim 3 , wherein the printing control unit corrects the printing data expressing the image by using the error information to make printing data for compensating for the errors of the colorimetric data of the standard image printed by the printing device in relation to the reference colorimetric data.

6. A printing control device for controlling a printing device to print on a printing medium a printing image corresponding to printing data by using a printing head for adhering ink on the printing medium, comprising: an error acquiring unit for acquiring error information expressing a result of comparing a colorimetric data obtained by measuring a color of a standard image of a standard recording amount in the ink printed on the printing medium in a specified color space with a reference colorimetric data; and a printing control unit for correcting, by using the error information, printing data expressing an image into printing data compensating for a color drift of the image to be printed by the printing device, and controlling the printing device to print a printing image corresponding to the corrected printing data, wherein when the ink recording amount a the maximum variation in colorimetric data due to variations in the amount of ink adhering on the printing medium for the ink, the variations occurring for each printing device, is chosen as the standard recording amount for printing the standard images by the printing device on the printing medium, and the error information expresses a result of comparing the colorimetric data obtained by measuring the color the standard images printed by the printing device on the printing medium and the reference colorimetric data, the printing control unit corrects the printing data in such a way that an error in the colorimetric data of the standard images of the ink recording amount with the maximum variation printed by the printing device in relation with the reference colorimetric data is compensated.

7. The printing control device according to claim 6 wherein: when (i) a first printing device and a second printing device requiring a larger amount of ink adhering on the printing medium than the first printing device are controlled to print a plurality of images for determining recording amount of which the recording amount of the ink has been changed on the printing medium, (ii) the color of each image for determining the recording amounts printed by the first printing device is measured in the specified color space to thereby acquire a first colorimetric data for each the image for determining the recording amount, (iii) the color of each image for determining recording amounts printed by the second printing device is measured in the specified color space to thereby acquire a second colorimetric data for each image for determining the recording amounts, and (iv) the ink recording amount having a maximum variation in colorimetric data due to variations in the amount of ink adhering on the printing medium, the variations occurring for each the printing device, has been determined as the standard recording amount from the amount of ink with which the same plurality of images for determining the recording amount as the first and second selective color component amounts have been printed, the error information expresses the results of comparing the colorimetric data acquired by measuring in the specified color space the color of standard image of the standard ink recording amount and the reference colorimetric data; and the printing control unit uses the error information to correct the printing data expressing the image and to make printing data for compensating the error in the colorimetric data of standard image of the standard ink recording amount determined and printed on the printing medium in relation to the reference colorimetric data out of the same.

8. The printing control device according to claim 6 , wherein the printing control unit corrects the printing data expressing the image by using the error information to make printing data for compensating for the errors of the colorimetric data of the standard image printed by the printing device in relation to the reference colorimetric data.

9. A printing control device for controlling a printing device to print on a printing medium a printing image corresponding to printing data by using a printing head for adhering ink on the printing medium, comprising: an error acquiring unit for acquiring error information expressing a result of comparing a colorimetric data obtained by measuring a color of a standard image of a standard recording amount in the ink printed on the printing medium in a specified color space with a reference colorimetric data; and a printing control unit for correcting, by using the error information, printing data expressing an image into printing data compensating for a color drift of the image to be printed by the printing device, and controlling the printing device to print a printing image corresponding to the corrected printing data, wherein the printing device is a device capable of adhering at least a first dot and a second dot requiring a larger amount of ink than the first dot from the printing head on the printing medium; the error information is a piece of information provided for each type of the dot and expressing the results of comparing the colorimetric data obtained by measuring in the specified color space the color of standard image by the type of the dot printed by the printing device on the printing medium by decreasing the recording amount of dots of standard image printed by the second dot than the recording amount of dots of standard image printed by the first dot in the ink; and the printing control unit corrects the printing data expressing the image and makes printing data for compensating color drifts of image to be printed by the printing device from the printing data expressing the image out of the same by using the corresponding error information for each type of the dot.

10. A printing control device for controlling a printing device to print on a printing medium a printing image corresponding to printing data by using a printing head for adhering ink on the printing medium, comprising: an error acquiring unit for acquiring error information expressing a result of comparing a colorimetric data obtained by measuring a color of a standard image of a standard recording amount in the ink printed on the printing medium in a specified color space with a reference colorimetric data; and a printing control unit for correcting, by using this error information, printing data expressing an image into printing data compensating for a color drift of the image to be printed by the printing device, and controlling the printing device to print a printing image corresponding to the corrected printing data, wherein the printing device is a device capable of adhering on the printing medium a specified number of types of dots of different ink amount from the printing head on the printing medium; the error information is provided for each type of the dot, and expresses the results of comparing the colorimetric data obtained by measuring in the specified color space the color of standard image by the type of dot printed by the printing device on the printing medium and the reference colorimetric data; and the printing control unit corrects the printing data expressing the image and makes printing data for compensating color drifts of image to be printed by the printing device from the printing data expressing the image out of the same by using the corresponding error information for each type of the dot.

11. A printing control device for controlling a printing device to print on a printing medium a printing image corresponding to printing data by using a printing head for adhering ink on the printing medium, comprising: an error acquiring unit for acquiring error information expressing a result of comparing a colorimetric data obtained by measuring a color of a standard image of a standard recording amount in the ink printed on the printing medium in a specified color space with a reference colorimetric data; and a printing control unit for correcting, by using this error information, printing data expressing an image into printing data compensating for a color drift of the image to be printed by the printing device, and controlling the printing device to print a printing image corresponding to the corrected printing data, wherein the printing head is provided for every plurality of types of ink and the printing device is a device for printing the image for printing on the printing medium by using the corresponding printing head for each type of ink, the error information is provided for each type of the ink, and the printing control unit corrects the printing data expressing the image and makes printing data for compensating color drifts of image to be printed by the printing device from the printing data expressing the image out of the same by using the corresponding error information for each type of the dot.

12. A printing control device for controlling a printing device to print on a printing medium a printing image corresponding to printing data by using a printing head for adhering ink on the printing medium, comprising: an error acquiring unit for acquiring error information expressing a result of comparing a colorimetric data obtained by measuring a color of a standard image of a standard recording amount in the ink printed on the printing medium in a specified color space with a reference colorimetric data; and a printing control unit for correcting, by using this error information, printing data expressing an image into printing data compensating for a color drift of the image to be printed by the printing device, and controlling the printing device to print a printing image corresponding to the corrected printing data, wherein the printing device can form N number of types of dots of different sizes in an area of one picture element by discharging selectively N number (N is an integer of two or more) of types of ink drops of different ink amount on the printing medium by using a plurality of types of ink and is a device for storing the error information for each type of ink in the plurality of types of ink and for each type of dot in at least one or more types of dots from among the N number of types of dots, and the printing control unit receives the error information from the printing device.

13. The printing control device according to claim 12 , wherein: the printing data are dot data expressing the state of dots formed of each picture element in image for printing; and the printing control unit generates the dot data by processing the given original image data and generates the dot data wherein errors of the colorimetric data are compensated according to the error information for each type of ink in the plurality of types of ink and for each type of dot in at least one or more types of dots from among the N number of types of dots.

14. The printing control device according to claim 13 , further comprising a color converting unit for generating color converted image data expressed in a plurality of color components that the printing device can use by converting the color indicating system of the original image data by using a color converting table; and a half-tone unit for converting a gradation value of the color converted image data for each picture element into any of N+1 number of gradations values based on a relationship of correspondence between the gradation value of the color converted image data inputted and a combination of recording rates for each type of dot outputted the relationship of correspondence having been compensated based on the error information, wherein the half-tone unit generates the compensated relationship of correspondence based on the reference relationship of correspondence between the gradation values of the color converted image data and the combination of recording rates for each type of the dot, and on the error information.

15. The printing control device according to claim 12 further comprising a compensating dot number recording unit for recording the number of dots that adjusts colorimetric data for each type of the ink and for each type of the dot, wherein the printing control unit generates the dot data of which errors in the colorimetric data are compensated for each type of the ink and for each type of the dot in response to the error information and the contents recorded in the compensating dot number recording unit.

16. The printing control device according to claim 15 wherein: the colorimetric data and the reference colorimetric data constitute coordinates obtained by measuring in the uniform color space the color of the standard image printed on the printing medium; and the compensating dot number recording unit records the number of ink dots adhering on the printing medium when the reference colorimetric data are obtained by measuring in the uniform color space the color of the standard image for each type of the ink and for each type of the dot and the number of ink dot adhering on the printing medium when the colorimetric data corresponding to the point having the minimum distance to the point having the coordinate value of the reference colorimetric data as its coordinate among a plurality of points having the coordinate value of the colorimetric data in the uniform color space as their coordinates are obtained, both dot numbers corresponding each other.

17. A printing control method for controlling a printing device to print on a printing medium a printing image corresponding to printing data by using a printing head for adhering ink on the printing medium, comprising: acquiring error information expressing a result of comparing a colorimetric data obtained by measuring a color of a standard image of a standard recording amount in the ink printed on the printing medium in a specified color space with a reference colorimetric data; specifying color correcting data corresponding to the error information among a plurality of color correcting data stored in a storage area for storing a plurality of color correcting data specifying a relationship of correspondence between printing data before the correction and corrected printing data for compensating for a color drift in the printing image for every plurality of stages of comparison results between the colorimetric data obtained by measuring the color of the standard images in the specified color space and the reference colorimetric data; correcting printing data expressing an image into printing data compensating for a color drift of the image to be printed by the printing device by referring to the color correcting data; and controlling the printing device to print a printing image corresponding to the corrected printing data.

18. A medium for recording a printing control program for enabling a computer to execute the function of controlling a printing device to print on a printing medium a printing image corresponding to printing data by using a printing head for adhering ink on the printing medium, the medium recording the color control program for enabling the computer to execute the functions of: acquiring error information expressing a result of comparing a colorimetric data obtained by measuring a color of a standard image of a standard recording amount in the ink printed on the printing medium in a specified color space with a reference colorimetric data; specifying color correcting data corresponding to the error information among a plurality of color correcting data stored in a storage area for storing a plurality of color correcting data specifying a relationship of correspondence between printing data before the correction and corrected printing data for compensating the color drift in the printing image for every plurality of stages of comparison results between the colorimetric data obtained by measuring the color of the standard images in the specified color space and the reference colorimetric data; correcting printing data expressing an image into printing data compensating for a color drift of the image to be printed by the printing device by referring to the color correcting data; and controlling the printing device to print a printing image corresponding to the corrected printing data.